Dental Mgmt: Diabetes Flashcards
Diabetes can result from a combo of defects in both:
insulin secretion and action
Diabetes affects the metabolism of what type of nutrient(s)?
every type (carbs, fats, proteins)
NIDDM sf:
Non-insulin dependent diabetes
What does the body use if it cant’ use glucose?
FA –> ketoacidosis
The use of FA for energy can lead to:
ketoacidosis, triglycerides –> FA’s –> fuel source
How does insulin maintain glucose homeostasis:
promoting glucose uptake into cells and storage in liver as glycogen
Insulin promotes the uptake of these:
glucose, FA’s and AA’s
TF? Cells can not use glucose as an energy source in diabetes.
T
How does Type 1 diabetes affect insulin levels?
AI destruction of pancreatic B cells
% of ppl w Type 2:
90%-95%
Typical age for the onset of Type 1 diabetes:
15yo
Pts w Type 1 are more prone to have:
Grave’s, Addison’s, Hashimoto’s
TF? Some pts w DM have no evidence of autoimmunity.
T
What’s impaired in Type 2?
insulin function
Typically age of onset for type 2 diabetes:
40+, lower every yr
TF? Only minor Beta cell destruction in Type 2.
F. none
Is ketoacidosis more common in Type 1 or 2?
1, rare in Type 2
Types of diabetes:
AI, Type 2, gestational, pancreatic tumor, steroid induced, MRDM (malnutrition related DM), viral?
TF? Gestational DM usually stays w a woman after birth.
F. USUALLY goes away.
TF? Women are more predisposed to Type 2 DM later in life if they get gestational during pregnancy.
T
Ppl in US w diabetes.
29 million (8million undiagnosed)
% of pop in US w DM:
9.3%
% pop over 65yo w DM:
26%
of ppl w pre-diabetes:
86million and growing
Pre-diabetic range, mg/dl:
100 - 126
Diabetic, mg/dl:
126+
Normal, mg/dl::
under 100
Risk factors for Type 2:
age, obesity, genetics, insulin resistant muscle, fat, and liver cells, abnormal liver glucose production, elevated glucagon levels
Diabetics are __ times more likely to develop CV disease.
2
Diabetics are __ times more likely to have necrosis of extremities:
5
Diabetics are __ times more likely to have renal failure:
17
Diabetics are __ times more likely to go blind:
25
TF? Insulin resistance is related to high cerebral glucose.
F. low
TF? Insulin resistance is related to an inc risk of Alzheimer’s dementia.
T
How does high fructose corn syrup affect a persons body?
alters metabolism
2 episodes of hypoglycemia increases a persons risk of developing dementia how many times?
2X
Vascular complications in diabetes results from:
microangiopathy and atherosclerosis
Where do vascular changes occur in the body?
throughout
Where are vascular changes most damaging in the body?
kidney and retina, brittle vessels
Molecular level changes that lead to vascular complications:
accumulation of polyols, adv glycation end products, inc VEGF, lipid deposition
Oral manifestations of vascular complications:
xerostomia, infection, poor healing, inc caries, gingival and perio problems, candidiasis, burning mouth, soft/hard tissue changes, bony changes
Main complaint of diabetics:
dry mouth
What does the dry mouth result from?
systemic dehydration, altered salivary flow, meds, autonomic dysfunction, altered BM of glands, fatty deposits in parotid gland (seen in HIV pts too)
How is the viscosity of saliva altered w fat deposition?
increased viscosity
How is the parotid gland affected by fat deposition?
enlarges
Effects of xerostomia:
caries (not pit and fissure), altered taste, burning mouth, discomfort, inability to swallow if severe
Diabetic neuropathy may lead to:
burning, tingling, numbness, pain
How to red oral burning and taste disturbances:
good diabetic control
Taste sense most likely to be affected by DM:
sweet, disordered glucose receps
TF? Burning mouth syndrome is not really a syndrome.
T
Types of burning mouth:
1’ or 2’
Which is idiopathic, 1’ or 2’?
1’
Burning mouth can be secondary to:
xerostomia, candidiasis, anxiety, depression, GERD, endocrine disorders, hormonal imbalance, esp. menopause, diabetes, hypothyroidism, nutritional deficiencies, esp Vit B, ZInc, Folate, and iron
Ppl more likely to have a raw, depapillated tongue:
post menopausal, take blood glucose
Soft tissue changes that an occur:
exaggerated gingival response to plaque, similar to pregnancy gingivitis, hyperplastic, erythematous gingiva, acute gingival abscesses
A hyperplastic growth could be due to:
DM
1st identifiable oral manifestation of DM:
dramatic, aggressive pdd at a young age
Pts w DM are more prone to these as a result of periodontitis:
acute gingival abscess (tartar of food in pseudopocket)
How does DM promote periodontitis?
exaggerated inflammatory response to microflora
Are gingival crevicular fluid levels of glucose inc or dec in pts w DM?
inc
Effect of high gingival crevicular fluid levels of glucose:
changes interactions bw cells and their ECM in periodontium, good env for bad bacteria, inc production of end stage products
AGE sf:
Advanced Glycation End-products
What are AGE:
damaged proteins that accumulate and cause tissue damage
AGE bind to:
mac and monocyte receptors and inc secretion of interleukin-1 & TNF-alpha- tissue destruction
What does AGE formation results in?
collagen build up in capillary basement membranes, dec perfusion, tissue destruction, dec ability to repair, inc risk of infection
Immunological changes:
dec wound healing, inc risk of infection, infection more likely to have severe sequelae
How to treat infections w DM pts?
aggressively, includes periodontitis
What causes dec wound healing?
Red phagocytic activity, delayed chemotaxis, vascular changes, abnormal collagen production, genetics, 1’ relative have some defects in collagen production wo having DM (may be familial component)
Why is an inflammatory response dec in extremities of pts w DM?
brittle vasculature
Immunological changes are related to
immune status, inc risk for candidiasis & other fungal infections
Fungal infections can lead to:
xerostomia, inc salivary glucose levels, immune effects
Fungal infections of the mouth:
candidiasis, angular cheilitis
When is angular cheilitis more common?
winter, dec VD
When to assume a fungal infection is systemic:
if you can’t see where infection stops in oral cavity, dangerous
How to treat hyperplastic candidiasis
debride, medicate
What does it mean if infection stops at denture line?
denture is infected, not as dangerous as systemic
How to treat fungal infection that stops at denture line:
topically
Issue w Rxing topicals to treat fungal infection:
pt compliance, pt thinks that are healed when they are not and should continue taking but they don’t and get reinfected
Mucosal mycosis:
fungal infection, AIDS, poorly controlled DM, starts as sinus or nasal infection, can perforate to OC
Tx duration of oral candidiasis:
2wks for all
2 tx for oral candidiasis that are dissolved in mouth:
topical clotrimazole (5X/d), nystatin suppositories (6-8X/d)